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Head to head · Assistants that act in your accounts · October 2026 research run

Brea vs Gemini Spark

Gemini Spark scores 24.5 (F) on agent readiness against Brea's 12.9 (F), and leads in 5 of 7 scored categories. Brea leads on payments & pricing. Both do assistants that act in your accounts.

Best AI personal assistants that act for one person · All 834 assistants comparisons

BreaBrea AI LLC · Platform F12.9/100#1001 of 1010 Gemini SparkGoogle LLC · Platform F24.5/100#982 of 1010

Which one, for what

Brea F

Best for An iPhone user who wants an assistant across many apps and websites with per-action approval.

Ahead on

  • Payments & pricing, 20 against 10

Also in its favour

  • Free to start without a card

Watch for

No API, MCP server or A2A endpoint for an outside agent.

Gemini Spark F

Best for A person who already keeps mail, calendar and files in a personal Google Account and accepts Keep Activity being on.

Ahead on

  • Schema & documentation, 17 against 10
  • Agent ergonomics, 9 against 0
  • Security & auth, 60 against 7
  • Maintenance & community, 17 against 4

Watch for

No public API, SDK or MCP server for an outside agent was found. Spark is reached in the Gemini mobile app, the Mac app and gemini.google.com

Score by category

CategoryWeight this runBreaGemini SparkEdge
Reliability16%201514Brea +1
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21017Gemini Spark +7
Agent ergonomics13%16.209Gemini Spark +9
Security & auth14%17.5760Gemini Spark +53
Payments & pricing10%12.52010Brea +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8417Gemini Spark +13
Transparency & trust7%8.84849Gemini Spark +1
Negative events≤1500
TotalF 12.9/100F 24.5/100

Facts side by side

FactBreaGemini Spark
KindPlatformPlatform
VendorBrea AI LLCGoogle LLC
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth
PricingFreemiumPaid
x402nono
LicenceClosed service under Brea's terms (Brea AI LLC, last updated 2 July 2026).Proprietary hosted service under the Google Terms of Service
Read-only variant documentednono
llms.txtyesno
Last releasenone2026-05-19
Terms last updated2026-07-30
Privacy policy last updated2026-09-24
Customer content may train modelsyes, with an opt-out
Terms restrict automated accessyes
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waivernot found in the text

Verdicts

Brea

Brea is an iMessage assistant with a free plan that needs no card, approval by reply before it sends, deletes or pays, and one-time Link cards for purchases. No outside agent can call it, paid prices sit inside the app, and no changelog or subprocessor list was found.

Gemini Spark

Google's help pages state what Spark confirms before doing, how to delete its remote browser and code data, and the risks of prompt injection. Spark has no public API, Google calls it experimental, and it runs only with Keep Activity on, the setting under which chats are used for model training and human review.

Before you call either

Brea

  1. Don't plan to call Brea from another agent. It answers only the owner's iMessage thread.
  2. Tell the owner that replying ALWAYS stops Brea asking again for that action.

Gemini Spark

  1. Do not plan an integration against Spark. No public API or MCP server was found, and a person must hold a Google AI Pro or Ultra subscription
  2. Expect a confirmation request before sends, edits, purchases and web form submissions, and note that bulk changes to private Google Tasks run without one
  3. Delete remote browser data and remote code execution data in Gemini Spark Settings after a sensitive session. Deleting a task thread or Gemini Apps activity does not remove them
  4. Keep within 15 running tasks and 50 active schedules. A schedule does not run when 15 tasks are running or the usage limit is reached
  5. Treat every safety statement here as Google's own description. None was tested, and no message was sent to the service

Questions

Which is better for AI agents, Brea or Gemini Spark?

Gemini Spark scores 24.5 (F) on agent readiness against Brea's 12.9 (F), and leads in 5 of 7 scored categories. Brea leads on payments & pricing.

Other comparisons with Brea or Gemini Spark

Disclosure

Brea competes with LocalGhost, which Anchor Terminal's founder builds. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default.

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